What about mudhen gizzards? In the Fox River Valley there is a group of hunters that regularly shoot coots (mudhens). I'm told the gizzards of these birds are good when cooked or pickled. One of the old guys I used to hunt with regularly supplied these treats at his brother-in-law's gin mill, and I'm told they went over very big with the clientel. Ever heard anything weirder than this? Chops